Platinum- and gold-catalyzed hydrative carbocyclization of oxo diynes for one-pot synthesis of benzopyrones and bicyclic spiro ketones |
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| Authors: | Das Arindam Chang Hsu-Kai Yang Cheng-Hua Liu Rai-Shung |
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| Institution: | Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan, ROC. |
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| Abstract: | We report a one-pot synthesis of benzopyrones and tricyclic spiroketones from hydrative carbocyclization of oxodiyne substrates catalyzed by PtCl2 and PPh3AuCl/AgOTf, respectively. The distinct carbocyclizations with Pt and Au catalysts stem from their altered regioselectivity in the oxo-assisted hydration of the neighboring alkyne carbons. |
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